So, Paul, you're shifting the goalposts to 20?
After careful deliberation, these are in no particular order...
11. Funeral in Berlin
12. The Usual Suspects
13. The 39 Steps
14. Tora! Tora! Tora!
15. An Ungentlemanly Act
16. La Haine
17. North by Northwest
18. Battle Royale
19. The Spy Who Came In From The Cold
20. Twin Town
Oh, and then Rockstar had to mention Zulu
Can we make it 30?